Problem with web service

I try to use simple web service but when i try to run a proccess with web service i have this exception:

SEVERE: Method Parameter: return cannot be null. This is BP 1.1 R2211 violation.
javax.xml.ws.WebServiceException: Method Parameter: return cannot be null. This is BP 1.1 R2211 violation.

I use web service with this wsdl:

http://jax-ws.dev.java.net. RI's version is JAX-WS RI 2.1.6 in JDK 6.
-->

http://jax-ws.dev.java.net. RI's version is JAX-WS RI 2.1.6 in JDK 6.
-->

Do you now how can i solve this problem ?

For example I tried use this

For example I tried use this web serice with this WSDL:
http://soamoa.org:9292/artistRegistry?WSDL

and I made simple proccess with only one method getAll from this web service and the result was Exception. Or when i try make a simple web service with JAX-RPC implemementation using java 1.6 as in this web page (http://www.vogella.de/articles/JavaWebservice/article.html) result was the same exception. Can you please help me solve this problem.

I have eclipse(Europa) and last version of JOpera

Thanks for your help

java.net.SocketTimeoutException: Read timed out

Thanks for posting the WSDL.

The WSDL import into JOpera works fine. The problem is that when invoking the service, no answer comes back, so JOpera shows the failed task because there is a java.net.SocketTimeoutException: Read timed out, which may indicate that 1) the service is taking to long to reply, 2) there is a firewall that does not let the message through. You should try to check the web server, add some logging information about what is going on. Maybe try to call your service from different clients at different network locations.

Is your WS public?

Hi,

could you please post your WSDL and your web service on a public server so that we can try to reproduce the problem?

Thanks,
JOpera Support